Going to try to tap into the collective memories here.
Years ago I read about a PF/ER blogger who was (as I remember it) having lunch with a friend and got offered to teach a class on personal finance and/or early retirement, and he grabbed a napkin and wrote the syllabus on the spot. They thought it was a good summary, and posted the picture of the napkin. I can't for the life of me remember who it was and my google efforts have been fruitless. This ring a bell to anyone? I feel like someone here would remember.
Relatedly, upon searching I found this site, which is pretty cool:
https://napkinfinance.com/napkin/budget/A lot of the napkins are a little too noisy/dense for someone not already familiar with the concept, but I like the idea.
